[Qemu-devel] [PATCH 01/10] ARM: hw/exynos4210_mct.c: Fix a bug which hangs Linux kernel.

[Peter Maydell]

From: Stanislav Vorobiov <address@hidden>

After some long period of time Linux kernel hanged due to
ptimer_get_count may return 0 before timer interrupt occurs,
thus, causing FRC to jump back in time

Signed-off-by: Evgeny Voevodin <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
 hw/exynos4210_mct.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/hw/exynos4210_mct.c b/hw/exynos4210_mct.c
index 7474fcf..7a22b1f 100644
--- a/hw/exynos4210_mct.c
+++ b/hw/exynos4210_mct.c
@@ -376,10 +376,6 @@ static uint64_t exynos4210_gfrc_get_count(Exynos4210MCTGT 
*s)
 {
     uint64_t count = 0;
     count = ptimer_get_count(s->ptimer_frc);
-    if (!count) {
-        /* Timer event was generated and s->reg.cnt holds adequate value */
-        return s->reg.cnt;
-    }
     count = s->count - count;
     return s->reg.cnt + count;
 }
-- 
1.7.1